The Collaborative International Dictionary
Sheading
Sheading \Shead"ing\, n. [From AS. sc[=a]dan, sce['a]dan, to separate, divide. See Shed, v. t.] A tithing, or division, in the Isle of Man, in which there is a coroner, or chief constable. The island is divided into six sheadings.
Wiktionary
sheading
n. Any of the six administrative districts into which the Isle of Man is divided.